Compress Image to 500KB
Target 500KB for email attachments.
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Why Compress to 500KB?
500KB is the sweet spot for email attachments — small enough for Gmail/Outlook limits, large enough for high-quality photos. Also great for website uploads, social media, and general file size reduction. The two-phase algorithm finds the best balance between size and visual quality. Everything runs in your browser.
How It Works
- Upload any JPG, PNG, or WebP image.
- The default target is 500KB — adjust with the slider (20KB to 2MB).
- Phase 1 reduces quality in 5% steps. Phase 2 scales dimensions if needed.
- Drag the comparison slider to see before/after.
- Download — done.
Related: Compress to 100KB, Compress to 200KB, Image Compressor.
FAQ
Is this free and private?
Yes. Everything runs in your browser. Your images never leave your device.
Can I target a different size?
Yes — drag the slider or click a preset button (50KB, 100KB, 200KB, 500KB, 1MB).
What's the maximum input size?
There's no hard limit, but very large images may be slower due to browser memory constraints.
Does it work on mobile?
Yes — the tool runs in any modern mobile browser. Upload from your photo library and download the result.
Is this tool free to use?
Yes. The tool is free to use in your browser and does not require an account.
Do I need to install anything?
No. The workflow runs in a normal modern browser, so you can use it on desktop or mobile without installing extra software.